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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (9): 289-293.

所属专题： 植物保护

• 植物保护 农药 • 上一篇    下一篇

十三种农药对美国白蛾三龄幼虫触杀作用研究

余金咏,吉志新,温晓蕾,贺字典   

  • 收稿日期:2009-09-29 修回日期:2010-01-11 出版日期:2010-05-05 发布日期:2010-05-05
  • 基金资助:

    河北科技师范学院青年项目基金

Study on toxicity of thirteen pesticides against Hyphantria cunea 3rd instar larvae by contact action

Yu Jinyong, Ji Zhixin, Wen Xiaolei, He Zidian   

  • Received:2009-09-29 Revised:2010-01-11 Online:2010-05-05 Published:2010-05-05

PDF (PC)

1148

摘要：

在室内利用十三种不同类型的农药对美国白蛾三龄幼虫进行了触杀作用研究，结果表明，20%灭多威悬浮剂对美国白蛾击倒速度最快， 在24h的致死效果就达100%，而三种拟除虫菊酯类农药和1.1%苦参碱.?烟碱水剂在36h对美国白蛾的幼虫的致死作用都达到100%，80%敌敌畏乳油在48H的致死作用也达到100%，1.8%阿维菌素乳油4000倍液在72h的触杀效果达到了98..2%，而25%灭幼脲3号悬浮剂和0.3%保硕1号水剂1500—4500倍在72h对美国白蛾的致死作用仅达到12.71%—39.99%，另外两种仿生农药和植物源农药对美国白蛾的致死作用在72h仍然很低；另外，还对十三种农药毒力回归方程进行了拟合并计算出了LC50。

关键词: 去皮果蔗, 去皮果蔗, 温度, 湿度, 贮藏

Abstract:

Toxic test of thirteen pesticides on Hyphantria cunea 3rd instar larvae by immersion method was evaluated in laboratory. The results revealed mortalities of larvae were all reached 100% with the treatment of 20% methomyl WP after 24h, three chrysanthemum cinerariaefolium and 1.1% matrine?nicotine AW after 36h, besides 80% DDV EC after 48h. Followed, 1.8% abamectin Ec in 72 h gave 98.2% mortality rate on Hyphantria cunea (Drury) with the dilution of 4000 time, while 25% chlorbenzuron Ⅲ WP and 0.3% baoshuoⅠAS after 72honly provided 12.71%-39.99% mortality rate against the pest with the dilution 1500-4500 time .And the pest mortality rate was lower with the treatment of the other two bionic and botanical pesticides after 72h. Furthermore , toxticity regression equation of the thirteen pesticides on larvae was fitted well and values of LC50 were calculated.